Risposte comportamentali di Crocidura leucodon (Hermann, 1780) (Insectivora, Soricidae) ai meccanismi antipredatori di alcuni Artropodi
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Dipartimento di Ecologia, Università degli Studi della Calabria
Publication date: 2004-06-30
Hystrix It. J. Mamm. 2004;15(1)
Abstract Behavioural responses of Crocidura leucodon (Insectivora, Soricidae) to Arthropod preys with various antipredatory defenses Two wild specimens of Crocidura leucodon have been tested in laboratory to study the predatory behaviour towards different types of preys: Arthropods with chemical defenses and aposematic colours (Brachinus sclopeta, B. crepitans, B. peregrinus, Chlaenius chrysocephalus, Anchomenus dorsalis) and less protected species (es. Scybalicus oblongiusculus, Parophonus hispanus, Steropus melas, Calathus montivagus). In the first part of the experiment satiated Crocidura specimens preyed only on non protected species. In the second part satiated and food deprived Crocidura began to prey, although with less intensity, also on highly protected species. The shrews adopted "new" attack modes to avoid chemical injuries.